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MK-677 increases growth hormone without replacing, it, increasing lean muscle mass, improving sleep, and energy, and increasing insulin sensitivity.

Ibutamoren (MK-677) is a potent, long-acting, orally active, selective, and non-peptide agonist of the ghrelin receptor and a growth hormone secretagogue, mimicking the growth hormone (GH)-stimulating action of the endogenous hormone ghrelin. It has been shown to increase the secretion of several hormones including GH and insulin-like growth factor 1 (IGF-1) and produces sustained increases in the plasma levels of these hormones without affecting cortisol levels.


  • $3 each - Ibutamoren Mesylate (MK-677) 6.125mg Capsule [ea]

  • $6 each - Ibutamoren Mesylate (MK-677) 12.5mg Capsule [ea]

  • $12 each - Ibutamoren Mesylate (MK-677) 25mg Capsule [ea]

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